Sparse Representation (Cont.)

甄亮利 2012-3-23 23:28

1. Uniqueness Theorem 2.1. For an arbitrary pair of orthogonal bases Ψ , Φ with mutual-coherence μ (A), and for an arbitrary non-zero vector b ∈ IR n with representations α and β correspondingly,the following inequality holds ...

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An introduction to Sparse Representation

热度 1 甄亮利 2012-3-23 22:33

Preliminaries A full-rank matrix A ∈ Rn×m with n m generates an underdetermined system of linearequations Ax = b having infinitely many solutions.Suppose we seek the sparsest solution,i.e., the one with the fewest nonzero entries. Can it ever be unique? If so, when? As optimizat ...

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